Automatic train or car stopping apparatus.



specification.

SARATI-IpKUiMAE GHOSI-I, OLE SEATTLE, WASHINGTON.

AUTOMATIC TRAIN OTB/CAR STOIBINGAPPARATUSi To all. {whom it may concern:

Be itknown that 1,, SARATH KUMAR Gnosn, a subject of the King of GreatBritain, residing at Seattle, in the county of King and State of.Washington, have invented certain new and useiz'ul Improvements inAutomatic Trainer Oar Stopping Apparatus, of which the. following is aMy invention relates to an improved method for stopping. automatically atrain or car that uses an air-brake, onpassing a signal set at stop. 7 y

My invention is equally applicable where the block system of signalingis used or the manual system of signaling; the setting of the semaphoresignal at st0p-position by .eithervsys-tein sets automatically thisapparatus into activity for stopping the train or car. Also, myinvention stops the train or carby automatically opening a valve in theair-line by merely mechanical action without the use of any electricaldevice.

My invention consists of two parts first,

a mechanism connected with the semaphore signal and hereinafter calledthe track in- .strunnent; second, an apparatus on the en- 'me'thod anddescribe it here.

gine or car. I now describe these in detail illustrated so far as neededby the accornpanying drawing, in which- Figure- 1 gives a side: view ofthe track instrument. Fig. 2 gives a side view of the apparatus inltheengine or which is rendered active by the track instrument, and

which opens a valve on the air-line. Fig. 0

7 gives a vertical. section of the valve in the air-line, showing therelative position of the pin: at the top which keeps the valve closed,

and the coiled spring at the bottom which opens the value when the pinis removed.

Same numbers reter to same parts in the several views. i

Thetraek instrumentmay be placed on the ground to lie below the passingengine or car, or be suspended from above over the passing engine: orcar, or be placed laterally 'so as to stand by the side of the passing.en-

gin-e or car 1). I. preter this last in Fig.1 a pole (i) of suitableheight is Specification of Letters Patent.

PatentedSept 14', 19 15.

Application filed .Tune'23, 1914.. senarnaseaara placed by the side ofthe track. On top of the pole a rod (,2) is hinged so as to rotate 111 avertical plane at right angle to the rails, any suitable form of hingebeing used which prevents the rod (2) from rotating too far back. I -herod (2) is connected by a wire or chain (at) tothe semaphore signal (5)this connection is made according to the semaphore convention of eachparticular railway so that, whatever be that convention, the rod ispulled out of the way of passing cars and rendered inactive when thesemaphore signal stands at clear-position, but the rod (.2) descendsorgravitates to a horizontal position and becomes active when the signalis set at stop-position. In

this method, iii a malicious person cuts the the rod (2). At the outerextremity of the rod (2).- there is a small cross arm (3); when thetrack instrument is in. the active or horizontal position this cross-arm(3) engages a brush (7) projecting horizontally from the apparatus oithe engine. In the engine apparatus (.Fig. 2) the said brush (7)isattaehed' to a rod. (8) which is pivoted at 9) tosome suitable supporton the on girls, the pivot permitting horizontal movement; the brokenline to the right of (9) shows the wall of the engine. The rod (8)further passes through a horizontal slit at the top of the stand (10) sothat the rod is not permitted to have any vertical movement, and hasonly horizontal movement within-v the slit. .lhe slit contains a lateralspring on each side oi? the rod so as to maintain the rod in a steadyposition without undue lateral vibration owing to the motion of theengine, but when the rod has to move under the actuation of the trackinstrument the springallows the necessary movement.

presses upward the sliding part of the valve Atthe top of the valve in avertical position there is a thin metal pin (14) which presses downwardon the sliding part of the valve. The downwardpressure of the pincounteracts the upward pressure of. the coiled spring and keeps thevalve closed; but if the pin be removed, the upwardp'ressure of thespring would open the valve and thus open the air-line and arrest thetrain or car. Thus if the engine passes a signal set at stop, the trackinstrument actuates the brush (7) on the rod (8-), andthe conse- 'quenthorizontal movement of the rod causes its inner extremity (11) to knockout the pin' (14:) and thereby arrest the train.

Fig. 2 shows a-rest or-bracket (15, 16) which upholds the engineapparatus at some suitable part of the engine. .The bracket sustains a'box-like cover indicated by dot-.

' mosphere; (18) is the corresponding orifice on (17) here viewed insection from the side. Hence if the pin (14) be removed, the slide (17)would be pushed upward by the spring (20), so that the orifice (18)would come in a straight line with (19, 19) and thus open theair-passage, theupward movement of slide (17) beinglimited to thedesired amount by the hook or catch (21). The upper end of the pin (14)is held in position by (22) which is a projection from some fixed partofthe valve or of the engine. There may be a very slight indentation onthe underpartof (22) and the top part of (17) between which the pin isinserted,so as to keep the'pin from falling 01f with the vibration ofthe engine and so that it will need the lateral thrust of the rod (11)to throw out the pin.

It is desirable that the pin be made of thin metal so that it becomesslightly bent by this ejection and unusable a second time.

Thus if the engineer be supplied with a given number of pms for eachrun, then each pin he has used up acts. as a record against him ofhaving gone past a signal set at stop.. This makes for greater-care andeflioiency.

When the valve isopened in the manner of this invention and'theair'passes out of the exhaust orifice (19, 19) this escape of air isused to blow a whistle (23). F or this purpose a short conduit pipe isplaced at-the exhaust orifice to take in all or a portion of theescapingair, and the whistle. (23) is attached to the conduit pipe. Theblowing of the whistle instantly warns the "engineer that the brake is.beingautomatically applied.- He may instantly shut off'steam orpropelling power, or carry out any other I haveshown'tl e pin (14) asplaced above the valve and the spring (20) as placed be low it; but therelative positions of the pin duty prescribed for the emergency.

and spring may be reversed. In that case, if V the pin be placed below,the valve, instead of a spring'pres'sing downward on the valve a weightmay be used in preference.-

- I have mentioned a slidevalve as'being the type of valve I prefer forthis invention;

it be placed above or below the engine, then the relative direction ofthe engine apparatus will also be altered accordingly;

but any other type of valve-may be used,

Likewise, although I have-shown and de- M scribed certain preferredformsof-my ;ini breakable portion'of-the airrline is carried in anexposed place outside the body -of the" car,which breakable portionisfractured by atrack instrument on passing the. same. I do not claim anymethod of'car stoppingiby the fracture of the air-line carried in" anexposed place, or vbythe actual fracture of V the air-line in any part.'Iclaim:

In automatic train or .car stopping ap- V para'tus, the combinationwith' the brake pipe, of a valve 'havingone side .connected 4 to saidpipe and the opposite side opening into the atmosphere, a springnormally acting upon said valve to actuate the latter to open positionto bleed the brake pipe, apro- T jection on the casingof the valve, apin interposed between said projection and the tion to limit themovement of the valve to valve and acting to hold the latter in closedopen position under the action of said 10 position agaidllisft theaction of said spring, spring.

a 1'0 pivote or swinging movement and having one end adapted to strikeagainst SARATH KUMAR GHOSH' said pin to release the valve and mutilateWitnesses:

the pin so that the latter will be unfit for RoBEY J. BUNTA,

further service, and means on said projec- SARA VAN WAGENER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

